阅读说明：本技术 一种生物质燃烧器 (Biomass burner ) 是由 苑胜 刘文艺 于 2021-01-08 设计创作，主要内容包括：本发明公开了一种生物质燃烧器,包括燃烧器本体、供料单元、鼓风机和炉排单元,燃烧器本体包括上下安装的上炉体和下炉体,上炉体的炉体侧壁为间隔的三层结构,分别为外壁、中间壁和内壁,下炉体一侧开设进风口,鼓风机安装进风口外侧,供料单元安装在上炉体一侧；炉排单元包括设置在燃烧器本体内的至少两组阶梯式设置炉排组件、设置燃烧器本体外壁上的通风支撑件和通过传动杆与炉排组件连接的炉排电机组。通过上述技术方案,本发明可实现生物质燃料燃烧器的高效连续进料、送风燃烧、推渣清灰,有效避免了现有技术中的燃烧器由于缺少推渣结构,导致燃烧过程的结渣不能及时有效处理,进而燃烧不能持续的问题。(The invention discloses a biomass burner which comprises a burner body, a feeding unit, a blower and a fire grate unit, wherein the burner body comprises an upper furnace body and a lower furnace body which are arranged up and down; the fire grate unit comprises at least two groups of step-type fire grate components arranged in the combustor body, a ventilation support piece arranged on the outer wall of the combustor body and a fire grate motor unit connected with the fire grate components through a transmission rod. Through the technical scheme, the biomass fuel combustor can realize efficient continuous feeding, air supply combustion and slag pushing and ash removal, and effectively solves the problem that slagging in the combustion process can not be timely and effectively treated and further combustion can not be sustained due to the fact that the combustor in the prior art is lack of a slag pushing structure.)

1. A biomass burner is characterized by comprising a burner body, a feeding unit (1), an air blower (2) and a fire grate unit (3), wherein the burner body comprises an upper furnace body (4) and a lower furnace body (5) which are arranged up and down, the side wall of the upper furnace body is of a three-layer structure with intervals and is respectively an outer wall (41), an intermediate wall (42) and an inner wall (43), a heat insulation layer (44) is formed between the intermediate wall and the inner wall and is communicated with the inner wall through a plurality of secondary ventilation holes (45), a ventilation layer (46) is formed between the outer wall and the intermediate wall, and the ventilation layer is communicated with the lower furnace body; a fire grate unit is arranged between the upper furnace body and the lower furnace body, an air inlet (51) is formed in one side of the lower furnace body, the air blower is arranged on the outer side of the air inlet, and the air inlet is communicated with the ventilation layer; the feeding unit is arranged on one side of the upper furnace body;

the grate unit comprises at least two groups of step type grate components arranged in the combustor body, a ventilation supporting piece (31) arranged on the outer wall of the combustor body and a grate motor group connected with the grate components through a transmission rod (311), the grate components comprise a fixed grate and a movable grate, the fixed grate is horizontally arranged, the movable grate is movably arranged on the top surface of the fixed grate, one end of the movable grate is connected with the transmission rod, a slag pushing plate (32) is arranged at the other end of the movable grate, and a ventilation hole (33) is formed in each of the fixed grate and the movable grate.

2. The biomass burner according to claim 1, wherein the grate assembly comprises a first fixed grate (34), a first movable grate (35), a second fixed grate (36) and a second movable grate (37) which are arranged in a stepped manner from bottom to top, and the grate motor group comprises a first driving motor (38) in transmission connection with the first movable grate and a second driving motor (39) in transmission connection with the second movable grate.

3. The biomass burner according to claim 1, wherein the lower furnace body is internally provided with an air guide member (52), the middle part of the air guide member is provided with an air guide opening (521) corresponding to the air inlet, and the bottom of the air guide opening is internally and upwardly provided with an air guide plate (522) in an inclined manner.

4. The biomass burner of claim 3, wherein the air guide is 5-50cm away from the air inlet.

5. The biomass burner of claim 3, wherein the air deflector is angled from 10 ° to 60 ° from horizontal.

6. The biomass burner of claim 1, wherein the feed units are two horizontally disposed groups.

7. The biomass burner according to claim 1 or 6, wherein the feeding unit is a double auger feeding mechanism, which comprises a primary feeder (11), a blanking channel (12) arranged at the tail end of the primary feeder, a secondary feeder (13) arranged at the bottom of the blanking channel, and a feeding motor (15) arranged on a transmission bracket (14), wherein the primary feeder and the secondary feeder are both in transmission connection with the feeding motor.

8. The biomass burner as recited in claim 7, wherein the first-stage feeder and the second-stage feeder are a first screw push rod (16) and a second screw push rod (17) with the tail ends mounted on the transmission bracket, and the first screw push rod and the second screw push rod have the same diameter and the same pitch; the rotation speed of the first feeder is lower than that of the second feeder.

9. The biomass burner according to claim 8, wherein the transmission bracket is vertically fixed outside the burner body, a first chain wheel (161) is installed at the tail end of the first spiral push rod, a second chain wheel (162) is installed at the tail end of the second spiral push rod, and the feeding motor is in meshed transmission connection with the first chain wheel and the second chain wheel through a chain (18).

10. The biomass burner of claim 1, wherein the bottom of the ventilation support member is provided with a secondary air inlet (312) having one side communicating with the air inlet, and the other side of the secondary air inlet is communicated with the ventilation layer formed between the outer wall and the middle wall.

Technical Field

The invention relates to the technical field of combustors, in particular to a biomass combustor.

Background

The biomass burner is a biomass semi-gasification automatic control burner, and is a biomass pyrolysis burner taking organic biomass such as biomass particles and the like as fuel, and generally comprises two types of air-cooled biomass burners and water-cooled biomass burners. The combustion cost of the biomass burner is saved by 75 percent compared with electricity, 60 percent compared with fuel oil, 50 percent compared with natural gas, 40 percent compared with liquefied gas and zero pollution. The biomass burner liner is formed by adopting zirconium-silicon crystallization, high-pressure casting and high-temperature furnace firing, and needs to be fired at the temperature of more than 1000 ℃ for three days without loose pores.

The existing high-power biomass burner has huge material consumption in the combustion process, and the combustion slagging of the granular fuel hinders normal combustion, so that efficient continuous operation cannot be realized.

Disclosure of Invention

The invention aims to provide an online monitoring device for axial displacement and play of a high-speed shaft of a gearbox of a wind generating set.

The invention is realized by the following technical scheme in order to achieve the purpose:

a biomass burner comprises a burner body, a feeding unit, a blower and a fire grate unit, wherein the burner body comprises an upper furnace body and a lower furnace body which are arranged up and down; a fire grate unit is arranged between the upper furnace body and the lower furnace body, an air inlet is formed in one side of the lower furnace body, the air blower is arranged on the outer side of the air inlet, and a ventilation layer between the outer wall and the middle wall is communicated; the feeding unit is arranged on one side of the upper furnace body;

the grate unit comprises at least two groups of step type grate components arranged in the combustor body, a ventilation supporting piece arranged on the outer wall of the combustor body and a grate motor group connected with the grate components through transmission rods, the grate components comprise at least two groups of fixed grates horizontally arranged and movable grates movably arranged on the top surface of each fixed grate, one end of each movable grate is connected with the transmission rods, the other end of each movable grate is provided with a slag pushing plate, and primary ventilation holes are formed in the fixed grates and the movable grates.

Through the technical scheme, the biomass fuel burner can realize efficient continuous feeding, air supply combustion and slag pushing and ash removal of the biomass fuel burner, and the configuration of the multi-stage fixed grate, the corresponding multi-stage movable grate and the slag pushing plate can effectively ensure that the combustion process is not influenced by the combustion slagging of the granular fuel to obstruct normal combustion for the biomass burner with larger power, so that the continuous operation of the burner is realized. The problem that the slagging cannot be timely and effectively processed in the combustion process and then the combustion cannot be sustained due to the fact that a slag pushing structure is lacked in the combustor in the prior art is effectively solved.

Furthermore, the fire grate assembly comprises a first fixed fire grate, a first movable fire grate, a second fixed fire grate and a second movable fire grate which are arranged in a stepped manner from top to bottom, and the fire grate motor set comprises a first driving motor in transmission connection with the first movable fire grate and a second driving motor in transmission connection with the second movable fire grate.

Furthermore, an air guide member is arranged in the lower furnace body, an air guide opening corresponding to the air inlet is formed in the middle of the air guide member, and an air guide plate is obliquely arranged at the bottom of the air guide opening towards the inner upper side. The air guide divides the air supply of the air blower into primary air and secondary air, one side of an air inlet of the air guide is communicated with a secondary air channel, and the other side of the air inlet of the air guide enters the middle of the lower furnace body and ventilates upwards from the bottom of the upper furnace body through a primary ventilation hole, so that combustion is promoted.

Furthermore, the distance between the air guide piece and the air inlet is 5-50 cm. The wind guide member reasonably divides the wind of the blower in the lower furnace body to form sufficient primary wind and secondary wind.

Furthermore, the angle between the air deflector and the horizontal plane is 10-60 degrees. The air deflector is used for standardizing the flow direction of primary air, so that the primary air is aligned to the primary air hole of the fire grate at the top of the lower furnace body, and the ventilation efficiency is improved.

Further, the feeding units are arranged in two groups horizontally. The two groups of feeding units meet the requirement of material supply of the large-scale biomass burner, and the two groups of feeding units can adopt the same feeding motor.

Furthermore, the feeding unit is a double-auger feeding mechanism and comprises a primary feeder, a blanking channel arranged at the tail end of the primary feeder, a secondary feeder arranged at the bottom of the blanking channel and a feeding motor arranged on the transmission support, and the primary feeder and the secondary feeder are in transmission connection with the feeding motor. The same feeding motor is used for driving the two-stage feeders simultaneously, and the rotating speed of the two-stage feeders can be conveniently and simultaneously controlled.

Furthermore, the first-stage feeder and the second-stage feeder are a first spiral push rod and a second spiral push rod, the tail ends of the first spiral push rod and the second spiral push rod are arranged on the transmission bracket, the diameters of the first spiral push rod and the second spiral push rod are the same, and the screw pitches of the first spiral push rod and the second spiral push rod are the same; the rotation speed of the first feeder is lower than that of the second feeder. The rotating speed of the first-stage feeder is lower than that of the second-stage feeder, so that the inside of the second-stage feeder can be always in a fuel-deficient state, high-temperature flames on the upper surface of the grate cannot enter the first-stage feeder, and safety accidents caused by backfire are avoided.

Furthermore, the transmission support is vertically fixed on the outer side of the burner body, a first chain wheel is installed at the tail end of the first spiral push rod, a second chain wheel is installed at the tail end of the second spiral push rod, and the feeding motor is in meshed transmission connection with the first chain wheel and the second chain wheel through a chain. The transmission support is the transmission mounting panel of pay-off unit, and motor output shaft, two spiral push rods all set up on the transmission support, and then carry out the transmission through sprocket and chain.

Furthermore, a secondary air inlet with one side communicated with the air inlet is formed in the bottom of the ventilation supporting piece, and a ventilation layer is formed between the other side of the secondary air inlet and the outer wall as well as the middle wall and communicated with the ventilation layer.

Compared with the prior art, the combustor adopts a double-screw, differential and horizontal automatic feeding mechanism, does not block materials, and avoids the hidden danger of fuel backfire and combustion. Equipped with an igniter naturally ventilated with negative pressure of the furnace chamber for automatically igniting the fuel by blowing hot air. An independent air inlet system is arranged and consists of primary air and secondary air. Air is supplied to the closed air chamber by the blower in a unified way, and primary air and secondary air are separated according to a reasonable proportion. The reciprocating type grate slag remover is arranged at the feed end of the combustion chamber, so that the slag on the grate can be thoroughly removed, and the continuous and stable operation of the boiler can be ensured.

Drawings

FIG. 1 is a schematic view of the front view inner cross section structure of the present invention;

FIG. 2 is a side view of the present invention showing the inner cross-section;

FIG. 3 is a schematic view of the structure of the outer side of the present invention;

FIG. 4 is a schematic top view of the inner cross-sectional structure of the present invention;

FIG. 5 is a schematic view of a first moving grate;

fig. 6 is a schematic structural view of the ventilation support frame.

In the figure, 1, a feeding unit; 11. a first-stage feeder; 12. a blanking channel; 13. a secondary feeder; 14. a transmission bracket; 15. a feeding motor; 16. a first helical push rod; 161. a first sprocket; 17. a second helical push rod; 171. a second sprocket; 18. a chain; 2. a blower; 3. a grate unit; 31. a ventilation support; 311. a transmission rod; 312. a secondary air inlet; 32. a slag pushing plate; 33. a primary vent; 34. a first fixed grate; 35. a first moving grate; 36. a second fixed grate; 37. a second moving grate; 38. a first drive motor; 39. a second drive motor; 4. an upper furnace body; 41. outer wall, 42, intermediate wall, 43, inner wall; 44. a thermal insulation layer; 45. a secondary vent; 46. a ventilation layer; 47. an igniter; 5. a lower furnace body; 51. an air inlet; 52. an air guide member; 521. a wind guide opening; 522. an air deflector; 53. a slag storage bin; 54. an ash falling bin; 55. and (4) an air chamber.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples.

In the description of the present invention, it is to be understood that the terms "first", "second", and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit indication of the number of technical features indicated, unless explicitly stated or limited otherwise. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

The terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "center", "vertical", "horizontal", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience in describing and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.

The first feature may be "on" or "under" the second feature and may include the first and second features being in direct contact, or the first and second features being in contact via another feature not being in direct contact. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

The terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

As shown in fig. 1 to 6, a biomass burner comprises a burner body, a feeding unit 1, a blower 2 and at least two sets of grate units 3, wherein the burner body comprises an upper furnace body 4 and a lower furnace body 5 which are arranged up and down. The side wall of the upper furnace body 4 is of a three-layer structure with intervals, namely an outer wall 41, a middle wall 42 and an inner wall 43, a heat insulation layer 44 is formed between the middle wall 42 and the inner wall 43 and is communicated with the middle wall 42 through a plurality of secondary air vents 45, a ventilation layer 46 is formed between the outer wall 41 and the middle wall 42, and the ventilation layer 46 is communicated with the lower furnace body 5. A fire grate unit 3 is arranged between the upper furnace body 4 and the lower furnace body 5. An air inlet 51 is formed in one side of the lower furnace body, the blower 2 is installed on the outer side of the air inlet 51, the air inlet 51 is communicated with the ventilation layer 46 between the outer wall 41 and the middle wall 42, and the blower 2 blows secondary air into the ventilation layer 46 at the same time. The supply unit 1 is installed at one side of the upper furnace body 4.

The fire grate unit 3 comprises at least two groups of step-type fire grate components arranged in the combustor body, a ventilation support member 31 arranged on the outer wall of the combustor body and a fire grate motor group connected with the fire grate components through a transmission rod 311, preferably, the number of the fire grate components is two, or more than two. The transmission rod 311 passes through the ventilation support 31 and connects the grate assembly inside the burner body and the grate motor unit outside the burner body. Preferably, the bottom of the ventilation supporting member 31 is provided with a secondary air inlet 312, one side of the secondary air inlet 312 is communicated with the air inlet 51, and the other side of the secondary air inlet 312 is communicated with the ventilation layer 46 formed between the outer wall 41 and the middle wall 42.

Each group of grate components comprises a fixed grate which is horizontally arranged and a movable grate which is movably arranged on the top surface of each fixed grate, and specifically, the fixed grates are arranged on the top of the lower furnace 5. One end of the movable grate is connected with the transmission rod 311, the other end is provided with a slag pushing plate 32, and the fixed grate and the movable grate are both provided with primary vent holes 33. Specifically, the slag pushing plate 32 is vertically arranged downwards relative to the end part of the movable grate and forms a supporting angle with the movable grate, so that a gap is formed between the bottom surface of the movable grate and the top surface of the fixed grate, and ash falling and ventilation are facilitated.

In a specific embodiment, the grate assembly comprises a first fixed grate 34, a first movable grate 35, a second fixed grate 36 and a second movable grate 37 which are arranged in a stepped manner from bottom to top, and the grate motor group comprises a first driving motor 38 in transmission connection with the first movable grate and a second driving motor 39 in transmission connection with the second movable grate. Specifically, the two end surfaces of the second fixed grate 36 are bent downward, so that a gap is formed between the bottom surface of the second fixed grate 36 and the top surface of the first movable grate 35 at the bottom.

In a preferred embodiment, the lower furnace body 5 is provided with an air guide 52 therein, the middle part of the air guide 52 is provided with an air guide opening 521 corresponding to the air inlet, and the bottom of the air guide opening 521 is provided with an air guide plate 522 inclined towards the upper part of the interior. Specifically, the top edge of the air guide 52 is fixed on the top surface of the lower furnace body 5, and the two sides are vertically fixed on the inner wall of the lower furnace body, preferably, an air chamber 55 is formed between the air guide 52 and the air inlet 51, and the transverse distance between the air guide 52 and the air inlet 51 is 5-50cm, which can be adjusted according to the size of the equipment, preferably 15-40 cm. The middle part of the air guide 52 is provided with a square hole or a round hole to form an air guide opening 521, and the air guide opening 521 corresponds to the air inlet 51 and guides the air of the blower 2 into the lower furnace body 5. The bottom of the air guiding opening 521 is provided with an air guiding plate 522 which is inclined downwards and upwards, preferably, the angle between the air guiding plate 522 and the horizontal plane is 10-60 degrees, and more preferably 20-40 degrees. The lateral distance between the wind guide 52 and the wind inlet 51 and the angle between the wind guide plate 522 and the horizontal plane can be set to be adjustable structures for adjusting the distribution of the primary wind and the secondary wind.

The air deflector 522 directs primary intake air to the primary vents 33 of the grate assembly to form effective intake air. The blower 2 pumps air to the air chamber 55, and the primary air and the secondary air are uniformly distributed through the primary air vent 33 and the secondary air vent 45 which are distributed in a reasonable proportion, so that the fuel is more fully combusted.

A slag storage bin 53 is formed between the other end surface of the lower furnace body 5 opposite to the air inlet 51 and the air guide 52. The first moving grate 35 and the second moving grate 37 are controlled by a first driving motor 38 and a second driving motor 39 respectively to realize reciprocating motion, and a slide rail for moving the moving grates can be arranged in the burner body. The bottom of the grate unit is provided with an ash falling bin 54 of the lower furnace body 5, the second movable grate 37 pushes fuel to move leftwards to the second fixed grate, and the fuel which is being combusted is synchronously pushed to move leftwards to the first movable grate 35. Further, the method is carried out. The first movable grate 35 pushes fuel to move leftwards to the first fixed grate 34, and synchronously pushes the burned slag to move leftwards to a slag storage bin 53 at the bottom of the left side of the burner body. The configuration of the multistage movable grate can effectively ensure that the combustion process is not influenced by the combustion slagging obstruction of the granular fuel to the normal combustion of the biomass burner with larger power, and the continuous operation of the burner is realized. The burner effectively avoids the problem that the slagging of the combustion process can not be timely and effectively processed due to the lack of a slag pushing structure of the burner in the prior art, and then the combustion can not be continued.

In one embodiment, the feed units 1 are arranged in two groups horizontally. In another embodiment, the feeding unit 1 is a double-auger feeding mechanism, and includes a primary feeder 11, a blanking channel 12 disposed at the end of the primary feeder 11, a secondary feeder 13 disposed at the bottom of the blanking channel 12, and a feeding motor 15 mounted on a transmission bracket 14, wherein both the primary feeder and the secondary feeder are in transmission connection with the feeding motor. An igniter 47 is provided on the upper furnace body 4, specifically, the igniter 47 is provided on the feed inlet side.

The fuel enters the first-stage feeder 11, the feeding motor 15 controls the first-stage feeder 11 to move leftwards, the fuel is pushed to move leftwards, the fuel enters the second-stage feeder 13 through the blanking channel 12, the feeding motor 15 controls the second-stage feeder 13 to move leftwards, the fuel is pushed to move leftwards to the upper surface of the grate assembly and is located above the secondary air inlet 312, and the secondary air blows air into a hearth inside the upper furnace body 4 to ignite.

In a specific embodiment, the first feeder 11 and the second feeder 13 are a first screw push rod 16 and a second screw push rod 17, the ends of which are mounted on the transmission bracket 14, and the first screw push rod 16 and the second screw push rod 17 have the same diameter and the same pitch; the rotation speed of the primary feeder 11 is lower than that of the secondary feeder 13.

Preferably, the transmission bracket 14 is vertically fixed at the outer side of the burner body, the first chain wheel 161 is installed at the end of the first spiral push rod 16, the second chain wheel 171 is installed at the end of the second spiral push rod 17, and the feeding motor 15 is engaged and connected with the first chain wheel 161 and the second chain wheel 171 through the chain 18.

The embodiments of the present invention are merely illustrative and not restrictive, and those skilled in the art can modify the embodiments without inventive contribution as required after reading the present specification, but the present invention is protected by patent law within the scope of the appended claims.